﻿using System;
using System.Windows;
using AuthenticationService.Web;
using AuthenticationService;
using AuthenticationService.Client;
using ModuleManagerService.Web;
using System.Collections.Generic;
using System.Linq;

namespace Dashboard.Shell
{
    public partial class App : Application
    {
        public App()
        {
            this.Startup += this.Application_Startup;
            this.Exit += this.Application_Exit;
            this.UnhandledException += this.Application_UnhandledException;

            InitializeComponent();
        }

        private void Application_Startup(object sender, StartupEventArgs e)
        {
            /*
             *  To make the WebContext available to xaml, we add it to the application
             *  resources before instantiating the main page.
             */
            this.Resources.Add("WebContext", WebContext.Current);

            ModuleManagerContext moduleManagerContext = new ModuleManagerContext();
            moduleManagerContext.Load(moduleManagerContext.GetModulesQuery(), (result) =>
                {
                    Bootstrapper bootstrapper = new Bootstrapper();

                    IEnumerable<Module> modulesList = (from m in result.Entities.Cast<Module>()
                                                      select m);
                    bootstrapper.ModuleList = modulesList;
                    bootstrapper.Run();
                }, true);
        }

        private void Application_Exit(object sender, EventArgs e)
        {
        }

        private void Application_UnhandledException(object sender, ApplicationUnhandledExceptionEventArgs e)
        {
            // If the app is running outside of the debugger then report the exception using
            // the browser's exception mechanism. On IE this will display it a yellow alert 
            // icon in the status bar and Firefox will display a script error.
            if (!System.Diagnostics.Debugger.IsAttached)
            {
                // NOTE: This will allow the application to continue running after an exception has been thrown
                // but not handled. 
                // For production applications this error handling should be replaced with something that will 
                // report the error to the website and stop the application.
                e.Handled = true;
                Deployment.Current.Dispatcher.BeginInvoke(delegate { ReportErrorToDOM(e); });
            }
        }

        private void ReportErrorToDOM(ApplicationUnhandledExceptionEventArgs e)
        {
            try
            {
                string errorMsg = e.ExceptionObject.Message + e.ExceptionObject.StackTrace;
                errorMsg = errorMsg.Replace('"', '\'').Replace("\r\n", @"\n");

                System.Windows.Browser.HtmlPage.Window.Eval("throw new Error(\"Unhandled Error in Silverlight Application " + errorMsg + "\");");
            }
            catch (Exception)
            {
            }
        }
    }
}
